基本解释[化学]澳代英汉例句双语例句Thiophene reacted with bromine and zinc to obtain 3-bromothiophene via substitution and reduction reaction.本文以噻吩与溴、锌粉依次发生取代，还原反应生成3-溴噻吩。bromine substitution更多例句专业释义化学澳代